[PowerAssert] Reproduce KT-66208

plugins/power-assert/testData/codegen/cast/InstanceEquals.box.txt

@@ -1,4 +1,35 @@
 Assertion failed
 assert(null is String)
             |
-            false
+            false
+
+Assertion failed
+assert(!(" is " is String))
+       |   |
+       |   true
+       false
+
+Assertion failed
+assert(!(
+       |
+       false
+    " is "
+      |
+      true
+
+            is
+
+            String
+))
+
+Assertion failed
+assert(null/*is*/is/*is*/String)
+       |
+       false
+
+Assertion failed
+assert(!((null is String) is Boolean))
+       |       |
+       |       true
+       |       false
+       false